Researchers have developed and validated scales to screen for wireless mobile device addiction.

a David N. Greenfield. The Center for Internet and Technology Addiction.
b Kwon M, Kim DJ, Cho H, Yang S. The smartphone addiction scale: development and validation of a short version for adolescents. PLoS One. 2013;8(12):e83558

Constructive self-assessment leads to change.
Unkind self-criticism leads to guilt.